Combination-lock.



www i i., i; 1 luM i l i., v i

uoBEar-n-1vrenoNoUei-t or Hernani/lex,- MIcHeAn.

COMBINATION-LOCK.

Application led. November 10 1916.

`America residincr at- Hamtramck in the county of TWayne and Statcof Michigan, have invented certain new and Vusefullmprovements in Combination-Locks, of which the following is Va specification, reference being had therein to. the accompanying drawings. j

The invention relates to combination locks and has moreparticular reference to a construction adapted for use upon door knobs to control` the operation of the latchbolt. The invention comprises various novel features of constructionas hereinafter set forth. j

In the drawings: Y

Figure l is a vertical section in the plane of the axis of the knob; j

Figs. 2, 3 and 4C, arecross-sections on lines fvwm, y-g/, and a-aFig. l;

Figs. 5 andfG are viewssinilar to Fig. Q showing different positions of adjustment; and

Fig. 7 is an elevation from side of Figs. 2 to 6.

A is a door and B is the lock located in a recess or mortise therein.k C is-the inner knob, D the outer knob and E thelatch bolt the reverse voperated by said knobs through the medium of rock-.arms C D.

For locking the bolt E from actuation by the knobs it is provided with a series of pawls or tumblers F, which arepivotally attached thereto and are adaptedto engage with a stationary locking shoulder or detent F. When any one ofthe pawls is thus engaged the latch-bolt E will be held from movement and will therefore lock the door. To release'the bolt it is necessary to disengage all of the pawls, which is accomplished by mechanism constructed as follows:`

. G G G2, etc., are cams, which are sleeved upon the inner. shank H which secures the two knobs to each other. Each of these cams is provided with a pointed projection I for engaging a cooperating pointed projection J 'on the corresponding pawl, the arrangement being such that the pawl will be disengaged only when the two points are in registration The camsare connected to each other by a lost-motion` engagement, such that they may be successively operated to disengage their corresponding pawls by an oscillatory adjustment of a common actu ating member; This actuating. member is Specification of Letters `JEatent.

ll'atentedDec. M, `19d 7./ seriarnaiaosoe.

preferably a knob K located in a recess in theV endof the outer knob D and provided with `a graduated 'annular portion Lwhich vmaybe vrotatively adjusted in relation to an index mark The knob K isconnected to a sleeve My surrounding the shank H and this sleeve in turn is keyed or otherwise secured toene of the cams VGr. Thus whenever the knobv K is revolved the cam G will be actuated thereby, andy as the lost-motion is taken up theother cams G G2, etc., will be successively revolved. Y Upon'reversing the direction oflrotation the lost-motion must be again taken' up, and thus it is possible to successively set the cams in any predetermined known. j

The inner knob C is provided with means for simultaneously disengaging all of the pawls, which as showncomprises arockable member N having a bar 0 extending beneath the pawls. The member N is also provicledivith a cam portionvN for engaging a coperating cam portion P upon the rockarm C, and sufficient lost-motion is provided in the portion of this rock-arm for retracting the boltil to permit of thepre vious operation of; the cams P and N whereby the bar will lift all of the pawls F. This construction permits of retracting the latch-bolt E whenever the inner knob `C is turned while 4the outer knob can only operate the bolt when the cams G are all in registration and in a position tolift thepawl's F..A The cams G are held frein accidental displacement by friction devices, preferably spa-liners Q which engage cylindrical hubs Ron the cams and which are anchored by engagement with a rod S. The hubs Rpreferably have segments` thereof cut away to engage with coperating segments of the adjacent cams,.these forming the lost-motion connection by which the cams are suce` cessively set.

In operation whenever it is desired to open the door from the outside, the knob K is manipulated according to a predetermined combination, setting the cams G in position if the indeX combination is registration and disengaging the pawls F.` When all of the pawlsl are released the knob D may be turned which will cause the rock-arm D to retract the latch-bolt, the pawls traveling over a guide-way T. One or more olf these pawls is p'ovided with a projection U, engages the which as the bolt is retracted corresponding cam G, and.: throwsit out of thereby successively its set position. Thus when the bolt is again projected by a spring V or other suitable returning means, the pawl Will be permitted to drop into engagement with the shoulder F,} preventing further retraction of the bolt until the combination is again reset.

The lock is preferably provided with means for holding the latch-bolt from projection to its locking position, such as the cam `ll,wlii :h when turned in one position will engage a shoulder W on the'bolt, allowingtlielatter to project 'sufficiently to functions-'s a ydoor latch, but preventing a complete projection such as fwill allow the pawls to have locking engagement with the shoulder F. This caminay be operated by asiiitableknob orA lever located on the inside lof the door. Y 4

It`w'ill be readily understood that concealment-ofthe cams'is essential to prevent unauthorized actuation of the same to their positions for raising the tumblers F and the location ofl the parts kwithin the casing B supplies the desired concealment.

What I claim as my invention is 1'. rfhecombination with a lockingcbolt andmeans orre/tractin'g the same, of a series" of Vpawls carried by said bolt, each adapted' to lock the vbolt from retraction, a series of concealed 'cams for respectively actuating said' pawls to release'the bolt, and lostmotion connecting means between said cams by which they may be successively actuated according to a. predetermined combi nation'to release all of said pawls.

`2. The combination with a bolt and means for retracting the same, of a series of pawls pivotally attached to said bolt, a detent for engaging said pawls ,to hold the bolt from retraction, a series of concealed cams for respectively liftinosaid pawls out of engagement with said detent, operating mechanism by which said cams maybe successively positioned according to a predetermined combinationrto lift all of said pawls and permit the retraction of said bolt, and means for automatically throwing the combination upon the retraction of the bolt.

3.7`The combination with a locking bolt and means for retracting the same, of a series of pawls carried by said bolt, a detent for engaging said pawls to lock the bolt from retraction, a rotatively adjustable member, a series of cams sleeved upon said member and respectively engageable with said pawls, eachbeing adapted to lift its corresponding pawl out of engagement with said detent, lost-motion connections between saidv cams and ysaid rotative member, by which the cams may be registered or set in accordance with a predetermined combination to disengage all of said pawls from said detent, and means automatically operating upon the retraction of the boltvto throw said cams out of registration.

l. The combination with a locking bolt,

Vof a-knob Jfor retracting the same, a series `of pawls and a cooperating detent i'or holding said bolt from retraction, a rotative member carried by said knob, and mechanism operated bysaid rotative member according to a predetermined combination for disengaging said pawls from said detent to permit the retraction oi' said bolt by said knob.

5. The combination with a locking bolt, of a knob for retracting the same, a series of pawls carried by said bolt, a detent ior engaging said pawls to hold said bolt from retraction, a series of cams for respectively disengaging said pawls from said detent, and a rotative member carried by said knob having a lost-motion engagement with said cams., whereby the manipulation of said rotative member according to a predetermined combination will disengage all of said pawls and permit retraction of said bolt by said knob.

6. The combination with a lockingbolt` of a knob for retracting the same, a series of pawls carried by said bolt, a detent for engaging said pawls to hold said bolt from retraction, cams arranged concentric with said knob for respectively actuating said pawls to disengage the same from said detent, and a second knob rotatively mounted on said first-mentioned knob and having a lost-motion connection with said cams, whereby they may be successively actuated according to a predetermined combination to disengage all of said pawls and permit retraction oi' said bolt by said knob.

7. The combination with a locking bolt, of a knob for retracting said bolt, a series of pawls, each of which is adapted to hold said bolt from retraction, cams eoaxially arranged with said knob for respectively actuating said pawls to disengage the same, a second knob mounted upon and independently rotative in relation to said first-mentioned knob, lost-motion connections between said second knob and said cams in series, whereby the manipulation of said second knob in accordance with a predetermined combination will set said cams to release said pawls, independent means for simultaneously disengaging all of said pawls, and an oppositely-arranged knob connected to actuate said second disengaging means and to retract said bolt.

S. The combination with a locking bolt and means for retracting the same. of a series of pawls each adapted to lock the bolt from retraction. a series of concealed cams for respectively actuating said pawls to release the bolt, and lost-motion connecting means between said cams by which they may be successively actuated according` to a pra determined combinationto release all o'l sai d pawls,

9. The combination with a locking bolt, of a` seriesof pavvls, each' adapted to lock the bolt fromretraction, means for successively disengaging the pawls, and independent means for `simultaneoi'u-ily actuating the pavvls to release the bolt and permit retraction thereof.`

l0.' The combination with a locking bolt, of a series of devices for Aindependently lock* ing, the bolt from retraction, means for successively disengaging said devices, and in dependent means for simultaneously actuating said devices .to release the bolt and permit retraction thereof.

1l. rlhe combination with a. locking bolt,

'of a series of paivls, eachl adapted to lock the bolt from retraction, a series of concealed cams tor'respectively actuating said paWls to release the bolt, actuating` means for the cams, and means for simultaneously disengag'ing the pawls. y

12. rllhe combination with a locking` bolt, of a seriesI of pawls, each adapted to lock the bolt from retraction, a series of concealed cams for respectively actuating said paivls to release the bolt, a lostmotion connectingg,` means bet-Ween said cams by which they may be successively actuated according to a predetermined combination to disenfgage all of said pavvls,and means for simultaneously disengaging the paWls.

13. The combination with a locking bolt, of a-` plurality of devices, each adapted to lock the bolt from retraction, a knob for retracting the bolt, a rotatively adjustable f member carried `by the knob, and means for actuating said devices from the rotative member to successively disengage the same and permit retraction of the bolt.

14. The combination with a locking` bolt,

of a plurality of devices for locking the bolt from retraction, means for successively disengagmg said members to alloiv retraction of `the bolt, andv accommonmeans for first` simultaneously disengaging said members and subsequently retracting the bolt.

'15., The combination with a locking bolt and means for retracting` the same, yoi a series of pavvls, each adapted to lock the bolt fromretraction, a series of concealed cams for respectively actuating the pavvls to release the bolt, meansfor holding said cams from accidental displacemennand lost-motion connecting means between said cams by which they may be successively actuated according to a predetermined combination to release all of said pavvls.

16. The/combination with a locking` bolt and means for retracting the same, of a series of paivls for respectively locking the bolt from retraction, a series of concealed cams for respectively actuating said pawls to release the bolt, and resilient members respectively trictionally engaging` the cams preventing accidental displacement thereof,

and means for successively actuating the cams according to a predetermined combination` to'release all oi' the paivls.` y

17. rllhe combination With a locking bolt, of a series ofdevices for respectively lock-4 ing;` the bolt from retraction, a kn-ob at one side of the bolt for retracting the same, means associated with said knob for successively disengaging said devices from their positions resisting retraction, and an alined knob at the other side of the bolt for irst disengaging said devices and subsequently retincting` the bolt.

18. The combination with a. locking bolt and means for retracting the same, of a paWl pivotally attached to said bolt and a guide member for supporting said pawl during sliding motion ot' the bolt, said guide member and paivl having shoulders interengage vable to resist retraction of the bolt.`

19,. The combination With a looking bolt and means ior reti-acting the same, of a pavvl pivotally attached to said bolt, a guidemember for supporting' the rear extremity ot said pawl during' sliding' motion of the bolt, said guide member vfunctioning further as a detent and the free extremity of the pavvl being formed with a shoulder engageable with said detent to resist retraction of the bolt. f 20. The combination with a locking bolt, of a. series of pawls pivotally'attached to said bolt, amember forming a support'` for the free extremities of said paWls and forming also a detent for interlocking' With said pawls to resist retraction of the bolt and means for successively disengaging said y paivls from the detent.

2l.' The combination with a locking bolt, of a series of pawls pivotally attached to said bolt, a detent for engaging said paWls to hold the bolt from retraction, means for successively disengaging said paivls from the detent and independent means for simultaneously disengaging the paWls therefrom.

22. The combination with a casing, of a locking bolt therein, a series of devices attached to the bolt for independently locking` the same from retraction, a member carried by the casing engageable With said devices to resist retraction of the bolt, means for successively disengaging1 said devices from said member and independent means for simultaneously disengaging said devices from said member.

23. The combination with a locking bolt, of a plurality of pawls pivotally attached thereto, a detent engageable with said paWls to resist retraction of the bolt, means for successively disengaging said pawls to allow retraction of the bolt and a common means for first simultaneously disengagingthe pawls and subsequently retracting the bolt.

524i. The combination with a bolt and means for retracting the same, of a series evo of pawls eachadapted to lock the bolt from retractiom; a series of concealed cams for respectively disengaging the pawls, operat-A ing'. mechanism bywhich said cams'may beV successively positioned according to a predetermined combination to disengage all of said pawls and permit retraction of the bolt, andmeans `for automatically throwing the combination upon the retraction of the bolt.

Q5. The combinationv with a locking bolt .and means for retracting the same, of a series of pawlseach adapted to lock the bolt from retraction, a rotatively adjustable member, a series of cams sleeved upon said lnember and respectively engageable with said pawls each being adapted to disengage its corresponding pawl, lost motion connections between said cams and said rotative member by which the cams may be registered'or set in accordance withk a predetermined combination to disengage all of' said pawls, and means automatically operating upon the retraction of the bolt to throw said cams out of registration.

26. The combination with a locking bolt, of a knob for retracting the same, a series ol' pawls pivotally attached to said bolt, detent engageable with said pawls to hold the bolt from retraction, a rotative member carried by said knob and mechanism operated by said rotative member according to a predetermined combination for disengaging said pawls from said detent to permit retraction of the bolt by said knob.

27. VThe combination with a locking bolt, of a knob for retracting the same, a series of pawls respectively adapted to lock the bolt from retraction, a series ofl cams for respectively actuating said pawls to release the bolt and a rotative member carried by said knob having a lost motion engagement with said cams whereby the manipulation of said rotative member according to a predetermined combination will disengage all of said pawls and permit retraction of the bolt by said knob.

28. The combination with a locking bolt, of a knob for retracting the same, a series of pawls each adapted to lock the bolt from retraction, cams arranged concentric with said knob Jfor respectively actuating said pawls to release the bolt and a second knob rotatively mounted on said Virst mentioned lknob and having a lost motion connection with said cams whereby they may be successively actuated according'to a predetermined combination to disengage all of said pawls and permit retraction of the bolt by said knob.

29. The combination with a locking bolt and means retracting the same, of a series of pawls each adapted to lock the bolt from retraction, a rotatively adjustable member,

Qpies af this patent may be obtained for a series of cams sleeved upon said member and respectively engageable with said pawls, each being adapted to actuate its corresponding pawl to release the bolt therefrom, and lost motion connections between said cams and said rotative member by which the cams may be registered or set in accordance with a predetermined combination to disengage all of said pawls.

30. The combination with a locking bolt, of aseries of pawls each adapted to lock the bolt from retraction, a series of cams for respectively actuating said pawls to release the bolt, actuating means for the cams, and means for automatically throwing the combination upon the retraction oi the bolt.

31. The combination with a locking holt, of a series of pawls each adapted to lock the bolt from retraction, a series of cams for respectively actuating said pawls to release the bolt and actuating means for the cams, said pawls having shoulders engageable with the cams upon retraction of the bolt for automatically displacing them from their pawl engaging positions.

32. The combination with a bolt, of means for retracting the bolt, means associated with said bolt to lock the same in its fully projected position, and a' member independent of the retracting means adjustable for engagement with said bolt in its projected position to prevent i'ull projection thereof.

33. The combination with a casing, of a bolt therein, means for retracting the bolt, means associated with said bolt to lock the same in fully projected position, a cam adjustable to engage a shoulder of said bolt in a partially projected position thereof to prevent full projection of the bolt, and actuating means for said cam exterior to the casing, and independent of the means for retracting the bolt.

34. The combination with a bolt, of means for retracting the bolt, a series of pawls each adapted to lock the bolt from retraction in its fully projected position, and a member independent of the retracting means adjustable to be engaged with said bolt in a partially projected position thereof to prevent full projection of the bolt.

35. The combination with a bolt, of a plurality of pawls pivotally attached thereto, a member forming a support for the free extremities of said pawls during sliding motion of the bolt and forming a detent Jfor interlocking with said pawls when the bolt is fully projected and a member adjustable to engage said bolt in a partially projected position thereof to prevent its full projection.

In testimony whereof I aiiiX my signature.

ROBERT H. MCDONOUGH.

ve cents each, by addressing the Commissioner of Patents. Washington, I). G. 

